Помагте з химией
Na➡NaOH➡Na2SO4➡NaCl➡NaNO3
Zn➡ZnO➡ZnCl2➡Zn(OH)2➡ZnSO4➡Zn(OH)2

2Na+2H2O-->2NaOH+H22NaOH+H2SO4-->Na2SO4+2H2ONa2SO4+BaCl2 -->BaSO4+2NaCLNaCL+AgNO3-->NaNO3+AgCL2Zn+O2-->2ZnOZnO+2HCL-->ZnCL2+H2OZnCL2+2NaOH-->Zn(OH)2+2NaCLZn(OH)2+H2SO4-->ZnSO4+2H2OZnSO4+2KOH-->K2SO4+Zn(OH)2

2Na+2H2O=2NaOH+H22NaOH+SO3=Na2SO4+H2ONa2SO4+BaCl2=BaSO4↓+2NaClNaCl+AgNO3=NaNO3+AgCl↓2Zn+O2 = 2ZnOZnO+2HCl = ZnCl2+H2OZnCl2+2KOH = Zn(OH)2↓+2KClZn(OH)2+H2SO4 = ZnSO4+2H2OZnSO4+2NaOH = Na2SO4+Zn(OH)2↓